T-splice connector

ABSTRACT

An apparatus and method for splicing single pair ethernet (SPE) cables. By creating a T shaped intersection, the splicing device allows for sensors and other devices to run perpendicular in relation to the original cable. The splicing device further enables the cable to have multiple drop points along the cable.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims benefit to U.S. Provisional Patent ApplicationNo. 63/048,806, filed Jul. 7, 2021, the entirety of which is herebyincorporated by reference herein.

FIELD OF TECHNOLOGY

This disclosure relates to a splicing connector for use with single pairethernet (SPE) cables. More specifically, a T-shaped splice adapter isdisclosed that splices into a SPE cable to enable an additional cablepathway to be created in parallel with the original cable.

BACKGROUND

Single pair ethernet (SPE) cables provide high performance transmissionof data and power available while using only a single pair (two wires)of conductive wires. So the SPE cable offers a reduction in cablingmaterial over cables that include two pairs of conductive wires.

With the introduction of SPE cables, new cabling components andaccessories are developing for working with the SPE cables in new, orsometimes the same, application scenarios.

SUMMARY

This disclosure relates to a T-splice adapter for splicing into a SPEcable and connecting an external device to the SPE cable in a parallelconnection. The T-splice adapter offers a simple and effective use of acable splicing assembly that can be applied to the specific features ofa SPE cable.

According to an embodiment, a cable splicing device is disclosed. Thecable splicing device comprising a top housing and a bottom housingincluding a circuit board. The circuit board may comprise a first set ofinsulation displacement contacts (IDCs) configured to hold a pair ofwires from a first single pair ethernet (SPE) cable, a second set ofIDCs configured to hold a pair of wires from the first SPE cable, and athird set of IDCs configured to hold a pair of wires from a second SPEcable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of an exemplary T-splice adaptor having cablesattached, according to an embodiment.

FIG. 2 shows an exemplary cable system in a first configuration wherethe T-splice adaptor shown in FIG. 1 is used to couple external devicesto an SPE cable, according to an embodiment.

FIG. 3A is a perspective view of the T-splice adapter shown in FIG. 1 .

FIG. 3B is a perspective view of the T-splice adapter shown in FIG. 3A,where the T-splice adapter is in an opened state to show internalcomponents.

FIG. 4 is a magnified partial view of a section taken from the T-spliceadapter shown in FIG. 3B.

FIG. 5 is a partial view taken from the T-splice adapter shown in FIG. 4of a printed circuit board included in the T-splice adapter.

FIG. 6 is a magnified partial view of a stabilizing component includedin the T-splice adapter shown in FIG. 1 , where the stabilizingcomponent stabilizes wires held by insulation displacement contacts whenthe T-splice adaptor is in a closed state.

FIG. 7 is a perspective view of a T-splice adapter in an opened state toshow internal components, according to an alternative embodiment.

FIG. 8 is a partial view taken from the T-splice adapter shown in FIG. 7of a printed circuit board included in the T-splice adapter.

FIG. 9 shows an exemplary cable system in a second configurationincluding the T-splice adapter.

FIG. 10 shows an exemplary cable system in a third configurationincluding the T-splice adapter.

FIG. 11 shows an exemplary cable system in a fourth configurationincluding the T-splice adapter.

FIG. 12 shows a perspective view into an inner housing of the T-spliceadapter by removing a top portion of the T-splice adapter.

DETAILED DESCRIPTION

This disclosure relates to a splicing connector for use with single pairethernet (SPE) cables. More specifically, a T-shaped splice adapter isdisclosed that splices into a SPE cable to enable an additional cablepathway to be created in parallel with the original cable. The SPE cablebeing spliced into may be referred to as the trunk cable. Further, theSPE cable may be a solid type, or stranded type, of cable and either ashielded type, or unshielded type, of cable.

The T-splice adapter is spliced into the main trunk cable to create oneor more cable drops along the length of the trunk cable, where eachcable drop comprises a shorter section of SPE cable (i.e., the spurcable) that is run to other external devices such as sensors oractuators that will now be electrically coupled to the trunk cable inparallel through the T-splice adapter. So the T-splice adapter providesan easy and efficient way for to splice into long runs of the main trunkcable, which enables greater flexibility to dynamically control thecable system's scalability.

According to the disclosed embodiments, the T-splice adapter 100 has a“T” shaped body, where the additional spliced in spur cable 20 isperpendicular to the main trunk cable 10, as shown in FIG. 1 . As shownin FIG. 1 , the trunk cable 10 enters the T-splice adapter 100 at End Aand leaves at End B, while the spur cable 20 is spliced into the trunkcable 10 at End C of the T-splice adapter 100. One, or both, of thetrunk cable 10 and/or the spur cable 20 are SPE cables. The SPE cablemay be comprised of an insulation layer jacket 11 and an internalcomponent comprised of a single pair of copper conductor wires 13, 14 asshown, for example, in FIG. 3A. Also included within the trunk cable 10shown in FIG. 3A, may be a pair of filler rods 12 that are included totake the place of a second twisted pair of wires that would otherwise beincluded in other types of cables including two twisted pairs ofconductive cables. The filler rods 12 may be installed into the trunkcable 10 to be opposing each other according to some embodiments (seee.g., FIG. 3A), and installed to be adjacent to each other in otherembodiments. By including the filler rods 12, the trunk cable 10 isgiven a more evenly cylindrical shape that can be aestheticallypleasing, and/or provide structural advantages over cables having justthe single pair of wires. The filler rods 12 may be made from a plasticpolymer material or other non-conductive material. According to otherembodiments, the trunk cable 10 may not include the filler rods 12.

FIG. 2 shows an exemplary cable system 200 that includes three T-spliceadapters (first T-splice adapter 100-1, second T-splice adapter 100-2,and third T-splice adapter 100-3) being used to splice in three separateexternal devices (first device 25, second device 26, and third device27) to be electronically coupled in parallel to the trunk cable 10, viaa first spur cable 20-1, a second spur cable 20-2, and a third spurcable 20-3, respectively. The cable system 200 illustrates how aplurality of T-splice adapters 100 may be added to the trunk cable 10 tocreate multiple drop points where the spur cable 20 can be added toprovide power to, receive data from, send data to, and/or otherwisecommunicate with an external device.

FIG. 3A shows a perspective view of the T-splice adapter 100, where theT-splice adapter 100 is in a closed state having the spur cable 20spliced into the trunk cable 10. As shown in FIG. 3A, the T-spliceadapter 100 is comprised of an outer housing that includes both a topportion 110 and a bottom portion 120. The top portion 110 and the bottomportion 120 are configured to open up relative to each other by rotatingabout a hinge 101 in a clamshell manner (e.g., as represented by therotational arrow R). By rotating open to an open state, this enablesaccess to an inner housing of the T-splice adapter 100, which will bedescribed in more detail with reference to FIG. 3B.

FIG. 3B shows the T-splice adapter 100 in the open state, where the topportion 110 and/or the bottom portion 120 has rotated about the hinge101 in the direction represented by the rotational arrow R to open upand enable access to the inner housing. Within the inner housing, thebottom portion 120 of the T-splice adapter 100 includes a circuit board130 (e.g., printed circuit board (PCB)) configured to provide electricalcoupling via conductive traces between components. Included on thecircuit board 130 are a plurality of insulation-displacement contacts(IDCs) 111-112, 113-114, and 121-122, where the IDCs may be made from aferrous alloy having good conductivity characteristics. Morespecifically, a first set of IDCs 111-112 are positioned on the circuitboard 130 to receive and electrically couple to the wire pair of thetrunk cable 10 at End A, a second set of IDCs 113-114 are positioned onthe circuit board 130 to receive and electrically couple to the wirepair of the trunk cable 10 at End B, and a third set of IDCs 121-122 arepositioned on the circuit board 130 to receive and electrically coupleto the wire pair of the spur cable 20 at End C.

FIG. 4 is a magnified partial view of a section A that includes thecircuit board 130 from the inner housing shown in FIG. 3B. To splice inthe spur cable 20 into the trunk cable 10 using the T-splice adapter100, the trunk cable 10 is first cut and stripped of its insulationlayer jacket 11 to expose the individual copper wires, wire 13 and wire14, that comprise the single pair. After the wires 13, 14 are exposedand untwisted, they are individually placed into their respective IDCs.For example, a first side of the trunk cable 10 may be placed into afirst wire holder 117, and then the corresponding wire 13 is placed intoIDC 111 and the corresponding wire 114 is placed into IDC 112.Similarly, a second side of the trunk cable 10 may be placed into asecond wire holder 118, and then the corresponding wire 13 is placedinto IDC 113 and the corresponding wire 14 is placed into IDC 114.

For the spur cable 20, the spur cable is cut and stripped of itsinsulation jacket to expose its individual copper wires, wire 23 andwire 24, that comprise the single pair. After the wires 23, 24 areexposed and untwisted, they are individually placed into theirrespective IDCs. For example, the trunk cable 10 may be placed into athird wire holder 119, and then the corresponding wire 23 is placed intoIDC 121 and the corresponding wire 24 is placed into IDC 122.

As shown in FIG. 3B, the top portion 110 also includes a first wireretention feature 115 and a second wire retention feature 116. The firstwire retention feature 115 is positioned to interact with the first setof IDCs 111, 112 and the second wire retention feature 116 is positionedto interact with the second set of IDCs 113, 114. According to someembodiments, a third wire retention feature may also be included in thetop portion 110 to interact with the third set of IDCs 121, 122. Asshown in FIG. 3B, the first wire retention feature 115 and the secondwire retention feature 116 are formed integral to the top portion 110 tobe included as part of the top half of the inner housing. According toother embodiments, the first wire retention feature 115 and the secondwire retention feature 116 may be one or more separate piece that areattached to the inner housing of the top portion 110. The first wireretention feature 115 and the second wire retention feature 116 are madefrom a polymer material having a stiff nature to ensure enoughresiliency to force the wires 13, 14 further into the IDCs 111, 112 whenthe top portion 110 is rotated to meet with the bottom portion 120 inthe closed state.

Also included in the top portion 110 is a conductive plating 131 thatprovides additional shielding for the cables. The conductive plating 131is configured to be in contact with one or more of the wire holders 117,118, 119 when the T-splice adapter 100 is in a closed state to provide ashielding feature that ensures that there is sufficient shieldingmaintained between the trunk cable 10 and the spur cable 20. FIG. 12shows another view of the conductive plating 131 when the conductiveplating 131 is placed to cover the individual wires 13, 14, 23, 24 thatare now housed within the inner housing of the T-splice adapter 100. Theconductive plating 131 is used to ensure shielding for each section ofthe trunk cable 10 and the spur cable 20. The shielding feature providedby the conductive plating 131 works to reduce the effects thatelectromagnetic radiation has on the wire conductors in the trunk cable10 and/or spur cable 20.

The trunk cable 10 and/or spur cable 20 themselves may further include ashielding layer that goes around their conductive wires, positionedbetween their conductive wires and insulation layer. The shielding layermay be made from a material in the form of metalized foil (mylarsubstrate with metallic components to form a foil), metallic overbraid(wire woven to form a shield of various densities, expressed as “%coverage”), or a combination of both that surrounds the wire conductors.The conductive plating 131 may be made from a material that is the same,or similar, to that of the shielding layer.

The wire retention features 115, 116 are configured to securely installthe individual wires into their respective IDCs, and/or maintain theindividual wires within their respective IDCs when the top portion 110is closed and the T-splice adapter 100 is in the closed state. Forexample, according to an alternative installation method, the preppedwires 13, 14 may be placed into a lead-in portion on a top half of theirrespective IDCs 111-114. Then when the top portion 110 is closed intothe closed state, the first wire retention feature 115 will abut againstand push down the wires 13, 14 into an installed position on theirrespective IDCs 111, 112 where the IDCs 111, 112 will have penetratedany insulation layer on the wires 13, 14 to make contact with theconductive wire cores. Similarly, when the top portion 110 is closedinto the closed state, the second wire retention feature 116 will abutagainst and push down the wires 13, 14 into an installed position ontheir respective IDCs 113, 114 where the IDCs 111, 112 will havepenetrated any insulation layer on the wires 13, 14 to make contact withthe conductive wire cores. FIG. 6 is a cut-away side view of the firstset of IDCs 111, 112 when the T-splice adapter 100 is in the closedstate, that further shows how the shape and positioning of the firstwire retention feature 115 works to keep the wire 13 securely within itsrespective IDC 111, and the wire 14 securely within its respective IDC112.

After the wires 13, 14 of the trunk cable 10 and the wires 23, 24 of thespur cable 20 are successfully installed on their respective IDCs111-112, 113-114, 121-122, power and/or data may be communicated betweenthe spur cable 20 and the trunk cable 10. The electrical communicationbetween the trunk cable 10 and the spur cable 20 is provided by thelayout of the traces in the circuit board 130. FIG. 5 shows an exemplarytracing map that includes a first tracing 133 that couples the firstwire 13 from End A to End B in the T-splice adapter 100, while alsocoupling the first wire 13 in the trunk cable 10 to the first wire 23 inthe spur cable 20. The tracing map also includes a second tracing 134that couples the second wire 14 from End A to End B in the T-spliceadapter 100, while also coupling the second wire 14 in the trunk cable10 to the second wire 24 in the spur cable 20.

In addition or alternatively, the wires 13, 14 of the trunk cable 10 maybe electrically coupled to the wires 23, 24 using a physical terminationapparatus such as compression using a screw.

FIG. 7 shows an exemplary T-splice adapter 300 according to analternative embodiment where the wires 13, 14 from the trunk cable 10are not cut/split into two separate pieces. Here, many of the componentsin the T-splice adapter 300 are the same as those included in theT-splice adapter 100. For example, the T-splice adapter 300 includes atop portion 210 and a bottom portion 220 configured to rotate about ahinge in clamshell manner. The bottom portion 220 includes a first wireholder 217 for holding a portion of the trunk cable 10 at End A, asecond wire holder 218 for holding a portion of the trunk cable at EndB, and a third wire holder for holding a portion of the spur cable 20 atEnd C.

Also, the T-splice adapter 300 includes an inner housing that includes acircuit board 230. The circuit board 230 includes a set of IDCs 221, 222for receiving and holding the wires 23, 24 of the spur cable 20. Adifference offered by the T-splice adapter 300 over the T-splice adapter100 is the circuit board 230 including only a single set of IDCs 211,212 for receiving and holding the wires 13, 14 of the trunk cable 10.Only the single set of IDCs 211, 212 is needed for the wires 13, 14 ofthe trunk cable 10 because the trunk cable 10 is not cut into twoseparate pieces as is done for the T-splice adapter 100.

So for the T-splice adapter 300, instead of cutting the wires 13, 14from the trunk cable 10 all the way through to create two separatepieces requiring both the first set of IDCs 111, 112 and the second setof IDCs 113, 114 shown to be included in the T-splice adapter 100, theT-splice adapter 300 according to this alternative embodiment does notcut through the wires 13, 14 from the trunk cable 10 into separatepieces. It follows that in the T-splice adapter 300 of this alternativeembodiment, only a single set of IDCs 211, 212 is provided on thecircuit board 230 for receiving and holding the wires 13, 14 of thetrunk cable 10.

The installation process using the T-splice adapter 300 includesremoving the outer insulation layer jacket 11 from a portion of thetrunk cable 10 that will be placed between a first wire holder 217 and asecond wire holder 218. The exposed wires 13, 14 are then installed ontotheir respective IDCs 211, 212 corresponding to the trunk cable 10. Awire retention feature 215 is included on the top portion 210 forsecuring the wires 13, 14 into their respective IDCs 211, 212, similar(or the same) to how the wire retention feature 115 is shown to operatein FIG. 6 . For example, when the top portion 210 is closed into theclosed state, the wire retention feature 215 will abut against and pushdown the wires 13, 14 into an installed position on their respectiveIDCs 211, 212 where the IDCs 211, 212 will have penetrated anyinsulation layer on the wires 13, 14 to make contact with the conductivewire cores. Once in the closed state, the wire retention feature 215 isshaped to lay on top of the IDCs 211, 212 to secure the wires 13, 14within their respective IDCs 211, 212 as shown in FIG. 6 . The topportion 210 also includes a conductive plating 231 for providing theshielding characteristics discussed herein with reference to theconductive plating 131 for the T-splice adapter 100.

After the installation process is completed and the T-splice adapter 300is in the closed state, the spur cable 20 will be spliced into the trunkcable 10 via the tracing map on the circuit board 230, as shown in FIG.8 . According to the tracing map shown in FIG. 8 , a first trace 233electrically couples the first wire 13 of the trunk cable 10 to thefirst wire 23 of the spur cable 20, and a second trace 234 electricallycouples the second wire 14 of the trunk cable 10 to the second wire 24of the spur cable 20.

The circuit board 130, but also applicable to the circuit board 230, maybe configured to allow for additional functions to be achieved and/oradded to the external device being spliced into the trunk cable 10 viathe spur cable 20. For example, when the circuit board 130 is configuredto include a built-in terminating resistance, the T-splice adapter 100can be used at the end of a cable system 200 to terminate a section asshown in FIG. 9 . The cable system 200 shown in FIG. 9 is similar to thecable system 200 shown in FIG. 2 , however in FIG. 9 the cable system200 has installed the third T-splice adapter 100-3 at the edge toterminate the particular section of the cable system 200 at the edge. Toachieve this capability of being used as an end piece, the built-interminating resistance of the third T-splice adapter 100-3 is configuredto equal to the specified characteristic impedance of the trunk cable10. For example, if the trunk cable 10 has a specified characteristicimpedance of 100 ohms, the third T-splice adapter 100-3 is produced witha built-in terminating resistance of at least 100 ohms.

By configuring the circuit board 130 with the proper level ofresistance, the T-splice adapter 100 can also act as its own spur devicein cases where the T-splice adapter 100 is added at different lengths ofthe trunk cable 10 in anticipation of splicing in external devices infuture applications. To achieve this feature where the T-splice adapter100 can be used as its own spur device within the electrical circuitry,the T-splice adapter 100 is produced to further include a terminationresistor that remains electrically connected to the circuit provided bythe trunk cable 10 until the spur cable 20 is connected to the T-spliceadapter 100. In doing so, the bus does not see open circuit points wherethe spur cable 20 is not connected during the original installation ofthe T-splice adapter 100 to the trunk cable 10. This scenario is shownin FIG. 10 where the cable system 200 is shown to include the T-spliceadapters 100-1 to 100-3 installed onto the trunk cable 10 withoutnecessarily splicing in the spur cable 20 or external devices 25-27 yet.Then later, FIG. 11 shows a future event where the first external device25 has been spliced into the trunk cable 10 by simply attaching the spurcable 20-1 and attaching the first device 21 to the spur cable 20-1 atthe first T-splice adapter 100-1. In this way, the T-splice adapter 100offers a more efficient and convenient capability to anticipate the needto splice in additional devices to the cable system including theT-splice adapter 100. This translates to cost and resource savings.

According to an exemplary embodiment for attaching cables to theT-splice adapter 100 during an installation process, one or more of thefollowing processes may be implemented: opening the clam shell outerhousing of the T-splice adapter 100 to separate the top portion 110 fromthe bottom portion 120, electrically coupling a first wire and a secondwire of the trunk cable 10 to the first set of IDCs 111-112 located at afirst end of the T-splice adapter 100, electrically coupling the firstwire and the second wire of the trunk cable 10 to the second set of IDCs113-114, and electrically coupling a first wire and a second wire of thespur cable 20 to the third set of IDCs 121-122. Electrically couplingthe first wire and the second wire of the trunk cable 10 into the firstset of IDCs 111-112 may include cutting the trunk cable 10 and fitting afirst portion of the trunk cable 10 into the first wire holder 117, andelectrically coupling the first wire and the second wire of the trunkcable 10 into the second set of IDCs 111-112 may include fitting asecond portion of the trunk cable 10 into the second wire holder 118.Electrically coupling the first wire and the second wire of the spurcable 20 to the third set of IDCs 121-122 may include fitting a portionof the spur cable 20 into the third wire holder 119. The installationprocess may further include closing the clam shell outer housing of theT-splice adapter 100 to bring the top portion 110 and the bottom portion120 together such that a conductive plating 131 contacts at least one ofthe first wire holder 117, the second wire holder 118, or the third wireholder 119. The installation process may further include installing anexternal device (e.g., sensor) to the spur cable 20.

Furthermore, while the particular embodiments described herein have beenshown and described, it will be obvious to those skilled in the art thatchanges and modifications may be made without departing from theteaching of the invention. The matter set forth in the foregoingdescription and accompanying drawings is offered by way of illustrationonly and not as limitation. The actual scope of the invention isintended to be defined in the following claims when viewed in theirproper perspective.

What is claimed is:
 1. A cable splicing device comprising: a tophousing; a bottom housing; a circuit board comprising: a first set ofinsulation displacement contacts (IDCs) configured to hold a pair ofwires from a first single pair ethernet (SPE) cable; a second set ofIDCs configured to hold a pair of wires from the first SPE cable; and athird set of IDCs configured to hold a pair of wires from a secondcable; and a conductive plate located within an inner housing andpositioned to cover the first SPE cable and the second cable when thecable splicing device is in a closed state; wherein the conductive plateincludes a metalized foil material.
 2. The cable splicing device ofclaim 1, wherein the circuit board comprises: a set of conductive tracesconfigured to couple the first set of IDCs to the second set of IDCs andthe third set of IDCs.
 3. The cable splicing device of claim 1, whereinthe circuit board is configured to: electrically couple a first wire anda second wire from the first SPE cable via the first set of IDCs and thesecond set of IDCs; electrically couple the first wire from the firstSPE to a first wire from the second cable via the first set of IDCs andthe third set of IDCs; and electrically couple the second wire from thefirst SPE to a second wire from the second cable via the first set ofIDCs and the third set of IDCs.
 4. The cable splicing device of claim 1,wherein the top housing and bottom housing are connected via a hingeconfigured to be a rotation point for the top housing and the bottomhousing to rotate in a clamshell manner between an open state and aclosed state.
 5. The cable splicing device of claim 1, wherein the tophousing further comprises: a first wire retention feature configured tosecure the pair of wires from the first SPE cable within the first setof IDCs when the cable splicing device is in a closed state; and asecond wire retention feature configured to secure the pair of wiresfrom the first SPE cable within the second set of IDCs when the cablesplicing device is in the closed state.
 6. The cable splicing device ofclaim 1, further comprising: a first wire holder configured to hold afirst portion of the first SPE cable; a second wire holder configured tohold a second portion of the first SPE cable; and a third wire holderconfigured to hold a portion of the second cable.
 7. The cable splicingdevice of claim 1, further comprising: a first wire holder configured tohold a first portion of the first SPE cable; a second wire holderconfigured to hold a second portion of the first SPE cable; a third wireholder configured to hold a portion of the second cable; and aconductive plate located within an inner housing and configured to be inelectrical contact with the first wire holder, the second wire holder,and the third wire holder when the cable splicing device is in a closedstate.
 8. The cable splicing device of claim 1, wherein the circuitboard is configured to have an internal resistance to allow the cablesplicing device to be used as a termination end to the first SPE cable.9. The cable splicing device of claim 1, wherein the circuit board isconfigured to have an internal resistance.
 10. The cable splicing deviceof claim 1, wherein the second cable is a SPE cable.
 11. The cablesplicing device of claim 1, wherein the first SPE cable includes a pairof filler rods.
 12. The cable splicing device of claim 11, wherein thepair of filler rods are made of a plastic polymer material.
 13. Thecable splicing device of claim 11, wherein the pair of filler rods areinstalled opposite each other.
 14. A method for installing a trunk cableto a T-splice adapter, the method comprising: opening the T-spliceadapter to separate a top portion of the T-splice adapter from a bottomportion of the T-splice adapter; electrically coupling a first wire anda second wire of the trunk cable to a first IDC and a second IDC,respectively, wherein the first IDC and the second IDC are included aspart of a first set of IDCs; electrically coupling the first wire andthe second wire of the trunk cable to a third IDC and a fourth IDC,respectively, wherein the third IDC and the fourth IDC are included aspart of a second set of IDCs; electrically coupling a first wire and asecond wire of a spur cable to a fifth IDC and a sixth IDC,respectively, wherein the fifth IDC and the sixth IDC are included aspart of a third set of IDCs; fitting a first portion of the trunk cableinto a first wire holder; fitting a second portion of the trunk cableinto a second wire holder; fitting an end portion of the spur cable intoa third wire holder; and closing the T-splice adapter so that the topportion and the bottom portion come together and a conductive platingplaced within the top portion electrically couples to at least one ofthe first wire holder, the second wire holder, or the third wire holder.15. The method of claim 14, further comprising: installing an externaldevice to the spur cable.
 16. The method of claim 14, wherein at leastone of the trunk cable and the spur cable is a single pair ethernetcable.